From patchwork Mon Jul 5 18:30:25 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Adhemerval Zanella Netto X-Patchwork-Id: 44159 Return-Path: X-Original-To: patchwork@sourceware.org Delivered-To: patchwork@sourceware.org Received: from server2.sourceware.org (localhost [IPv6:::1]) by sourceware.org (Postfix) with ESMTP id 53A1B383D837 for ; Mon, 5 Jul 2021 18:34:47 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 53A1B383D837 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sourceware.org; s=default; t=1625510087; bh=DVlT4WaDTxx6Ux8eRh5dlOkk6nWRcd14OvgiwGvPyik=; h=To:Subject:Date:In-Reply-To:References:List-Id:List-Unsubscribe: List-Archive:List-Post:List-Help:List-Subscribe:From:Reply-To: From; b=vQ3GltWFl6cD6LzrNgZJkd8hXfDDCxSNSD6AWxNqGXIWRT7oUtnl0e063LVvr6NHL tTgNwJSFO/t+EUxZycy2OEYEy09mMGYch/NWNgxDVrfbuEvUl39Z4pxrbxAxyvRv1+ lh0/DXT0IfsE7ltj2q4lvcSY6aRangG3O48TrgqI= X-Original-To: libc-alpha@sourceware.org Delivered-To: libc-alpha@sourceware.org Received: from mail-pj1-x1036.google.com (mail-pj1-x1036.google.com [IPv6:2607:f8b0:4864:20::1036]) by sourceware.org (Postfix) with ESMTPS id 1F717383F415 for ; Mon, 5 Jul 2021 18:30:40 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 1F717383F415 Received: by mail-pj1-x1036.google.com with SMTP id b14-20020a17090a7aceb029017261c7d206so53664pjl.5 for ; Mon, 05 Jul 2021 11:30:40 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=DVlT4WaDTxx6Ux8eRh5dlOkk6nWRcd14OvgiwGvPyik=; b=IIFdZRvmv7q2nLc9SC1ghh/wOQ17Kqt8kB3YQm6IrLArFX5RPaYub3MbyY6DLzz63v ItUbnQXOMYMghVVmrOsQmTZtX2j4+AupopP6TQ6Dy6gvVUKnpKXIHWQznFKWGUhyM+qM A9hItczGbxD9kbojVY/tgG1RshMjG8iTSMejNEJJNWEERnFU/uI4Uz+60yCmnwW+SNkL xEyZKE40L3ZyXKToJCXQnClAfkzFA5c2Cm7UbCyz3zHZH0ww7PrqFBH/S08av7PsSROI 3iLgkNkVjIHf7So3/v027GpDNGdAeYpbAA2lnLLZYUgV7zgSDhWUJWpd2jdYbPjZyRwk +lUg== X-Gm-Message-State: AOAM533HC27NbaMcETg2hTNPnc81tOqbT1LhPWy6jknpaJN7lMuXCkV4 UKMrerIduSpJyujhYu6iCgE+VQ6A7DFFgg== X-Google-Smtp-Source: ABdhPJxOJUk04ewUANVb0vvF2rlVU4JUd3fKOVkuhY4SkP2wnfX1AbYlY54INCpimjGWfNVNkPFMqg== X-Received: by 2002:a17:90a:5306:: with SMTP id x6mr16328906pjh.59.1625509839100; Mon, 05 Jul 2021 11:30:39 -0700 (PDT) Received: from birita.. ([177.194.59.218]) by smtp.gmail.com with ESMTPSA id y13sm14311299pgp.16.2021.07.05.11.30.38 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 05 Jul 2021 11:30:38 -0700 (PDT) To: libc-alpha@sourceware.org Subject: [PATCH 5/7] support: Add support_socket_time64_timestamp Date: Mon, 5 Jul 2021 15:30:25 -0300 Message-Id: <20210705183027.3804093-6-adhemerval.zanella@linaro.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210705183027.3804093-1-adhemerval.zanella@linaro.org> References: <20210705183027.3804093-1-adhemerval.zanella@linaro.org> MIME-Version: 1.0 X-Spam-Status: No, score=-12.5 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, GIT_PATCH_0, KAM_SHORT, RCVD_IN_DNSWL_NONE, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.4 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on server2.sourceware.org X-BeenThere: libc-alpha@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Libc-alpha mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-Patchwork-Original-From: Adhemerval Zanella via Libc-alpha From: Adhemerval Zanella Netto Reply-To: Adhemerval Zanella Errors-To: libc-alpha-bounces+patchwork=sourceware.org@sourceware.org Sender: "Libc-alpha" Check if the socket support 64-bit network packages timestamps (SO_TIMESTAMP and SO_TIMESTAMPNS). This will be used on recvmsg and recvmmsg tests to check if the timestamp should be generated. --- support/Makefile | 1 + support/support.h | 3 + support/support_socket_time64_timestamp.c | 68 +++++++++++++++++++++++ 3 files changed, 72 insertions(+) create mode 100644 support/support_socket_time64_timestamp.c diff --git a/support/Makefile b/support/Makefile index 5c69f0de4b..7659357b28 100644 --- a/support/Makefile +++ b/support/Makefile @@ -76,6 +76,7 @@ libsupport-routines = \ support_set_small_thread_stack_size \ support_shared_allocate \ support_small_stack_thread_attribute \ + support_socket_time64_timestamp \ support_stat_nanoseconds \ support_subprocess \ support_test_compare_blob \ diff --git a/support/support.h b/support/support.h index 9ec8ecb8d7..bf74a2584b 100644 --- a/support/support.h +++ b/support/support.h @@ -154,6 +154,9 @@ extern bool support_select_modifies_timeout (void); tv_usec larger than 1000000. */ extern bool support_select_normalizes_timeout (void); +/* Return true if socket FD supports 64-bit timestamps. */ +extern bool support_socket_time64_timestamp (int fd); + /* Create a timer that trigger after SEC seconds and NSEC nanoseconds. If REPEAT is true the timer will repeat indefinitely. If CALLBACK is not NULL, the function will be called when the timer expires; otherwise a diff --git a/support/support_socket_time64_timestamp.c b/support/support_socket_time64_timestamp.c new file mode 100644 index 0000000000..2d5af65471 --- /dev/null +++ b/support/support_socket_time64_timestamp.c @@ -0,0 +1,68 @@ +/* Return whether socket supports 64-bit timestamps. + Copyright (C) 2021 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + . */ + +#include +#include +#include +#include +#include + +#ifdef __linux__ +# include + +static int +__attribute_used__ +setsockopt_syscall (int fd, int enable) +{ + int level = SOL_SOCKET; + int optname = COMPAT_SO_TIMESTAMP_NEW; + int optval = enable; + + int r = syscall (__NR_setsockopt, fd, level, optname, &optval, + sizeof (optval)); +# ifdef __NR_setsockopt + if (r == -1 && errno == ENOSYS) + { + long int args[] = { fd, level, optname, (long int) &optval, + sizeof (optval) }; + r = syscall (__NR_setsockopt, 14 /* SOCKOP_setsockopt */ , args); + } +# endif + return r; +} +#endif + +bool +support_socket_time64_timestamp (int fd) +{ +#ifdef __linux__ +# if __LINUX_KERNEL_VERSION >= 0x050100 \ + || __WORDSIZE == 64 \ + || (defined __SYSCALL_WORDSIZE && __SYSCALL_WORDSIZE == 64) + return true; +# else + int r = setsockopt_syscall (fd, 1); + if (r == -1 && errno == ENOPROTOOPT) + return false; + setsockopt_syscall (fd, 0); + return true; +# endif +#else + return false; +#endif +}